6662873 has 6 divisors (see below), whose sum is σ = 7750746. Its totient is φ = 5710992.

The previous prime is 6662857. The next prime is 6662879. The reversal of 6662873 is 3782666.

It can be written as a sum of positive squares in only one way, i.e., 6492304 + 170569 = 2548^2 + 413^2 .

It is not a de Polignac number, because 6662873 - 2⁴ = 6662857 is a prime.

It is a super-2 number, since 2×6662873² = 88787753228258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6662879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67940 + ... + 68037.

It is an arithmetic number, because the mean of its divisors is an integer number (1291791).

Almost surely, 2^6662873 is an apocalyptic number.

It is an amenable number.

6662873 is a deficient number, since it is larger than the sum of its proper divisors (1087873).

6662873 is a wasteful number, since it uses less digits than its factorization.

6662873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135991 (or 135984 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 6662873 is about 2581.2541525390. The cubic root of 6662873 is about 188.1714992323.

The spelling of 6662873 in words is "six million, six hundred sixty-two thousand, eight hundred seventy-three".